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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2010-4255
HistoryJan 25, 2011 - 1:00 a.m.

CVE-2010-4255

2011-01-2501:00:01
Debian Security Bug Tracker
security-tracker.debian.org
13

6.1 Medium

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:A/AC:L/Au:N/C:N/I:N/A:C

0.002 Low

EPSS

Percentile

58.4%

The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access.

6.1 Medium

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:A/AC:L/Au:N/C:N/I:N/A:C

0.002 Low

EPSS

Percentile

58.4%